Gelidium amansii
Gelidium amansii, known in Japan as tengusa (テングサ), in Korea as umutgasari (우뭇가사리), and in China as shí huā cài (石花菜), is an economically important species of red algae commonly found and harvested in the shallow coastal waters (3 to 10 m depth) of many East Asian countries, including China, Japan, North and South Korea, Singapore, and northeast Taiwan. == Description == G. amansii can be purple, red, to yellowish-red because it contains the class of pigments known as phycobiliprotein.